Hive hadoop jar files conflicts for custom UDF/Serde I have faced this problem very often and it take long time figure to resolve libraries conflicts. As Hadoop Map reduce libraries gets preferences when you launch Mapreduce job or hive lanuch mapreduce job and suppose your custom library required latest version…

Solr Multithreaded concurrent atomic updates problem: Solr has few limitations for the data ingestion, as it doesn’t provide row level lock over document. I face this problem while uploading data in bulk to solr5 in multithread environment and I solved it by solrj client side lock. When concurrent threads try…

Getting Started with Raspberry Pi 2 mod B is a small guide that answers all your basic queries Which model of Raspberry Pi should I buy? There are 2 popular variants of Raspberry Pi available – Pi 1 model A+ and latest Pi 2 Model B. Pi 1 Model A + is…

Raspberry pi or its latest version pi 2 mod B is a (I would not say cheap) low cost, credit card sized computer. Pi can plug into your computer monitor or TV set and uses a standard keyboard and mouse (wired or Wireless). It is capable of delivering everything that is…

It is now easy to handle asynchronous request in loadrunner. I am not going to start with differentiating synchronous and asynchronous request here, as I suppose if you are here you already know the difference. There are 3 types of Asynchronous requests, primarily – 1. Polling – Client sends…

Get Hbase Columns with Column Families Hbase doesn’t provide any client API to get all the column qualifiers. If your table has millions of rows and you need to get all the qualifiers then it takes very long time to get all columns by standalone program. Here is, map reduce…